Pin-plug connector.



R. A. SCHOENBERG, NOW BY JUDICIAL CHANGE OF NAME, R. A. BELMONT. PIN PLUG CONNECTOR.

APPLlCATION FILED JUNE 18. 1911.

1,272, 126. Patented July 9, 1918.

'N sTTs FEE.

BALPH A. scnonnsnae, (now BY imam. cannon or NAME RALPH A. BELMONT,)

' ornnw YORK, N. Y.

IPIN'ILUG CONNECTOR.

Specification of Letters Patent.

Patented Julv o. 1 918.

Application filed June 18, 1917. Serial No. 175,249.

T 0 all whom it may concern:

Be it known that l, RALPH A. SCHOEN- BERG, (now by udicial change of name RALPH A. BELMONT) of New York, in the county and State of New York, have invented a new and useful Pin-Plug Connector, of

Another feature'is the direct contact between the pin and screw shell.

Another feature is having the pin exposed to contact directly with the receiving socket.

Another feature is aspring contact between the screw shell and pin.

Another feature is the use of the insulating body to hold the screw shell in place.

Another feature is the center contact provided with a flange to engage screws of different lengths.

Another feature is the reduction of size and weight which is particularly important in the matter of freight and of custom duties.

Another feature is the member connecting the centercontact with one of the pins and having spring flanges to engage s id pin.

Another feature is that the body part of the plug will fit the standard receiving member and yet the pin carried by the cap will make a better contact because, among other reasons, it contacts with the shell of the plug and also with the shell of the recelving member.

Another feature is a threaded insulating body to engage the receiving member, one of the pins being exposed to engage. the receiving member. v

Other features will be pointed oat below.

In the drawings:

Figure 1 is a central longitudinal sectiona view of a connector embodying my invention;

Fi 2 is an elevation of the pin-carrying *mem er of the connector shown in Fig. 1;

Fig. 3 is a bottom plan-view of the member shown in Fig. 2; ,7

Fig. 4 is a side elevation of the plug mem; ber of the connector shown in Fig. 1; t

Fig. 5 is a plan view of the plug member shown in Fig. 4:;

gig. 6 is a section on line (3-6 of Fig. 4; an

Fig. 7 is a central longitudinal sectional view showing a modification.

The plug cap member has a base A and split contact pins a a connected to the lead wires.

The body member 13 shown in Fig. 1 is of porcelain and has a head I) slightly offset so that the standard cap member may be used therewith. Member B is further provided with an aperture b for passage of pin a, with recesses 6 6 If and b for purposes hereinafter described, and with a central hole for the' reception of the center contact screw-F.

To body member B is applied screw shell D having a lip (l bent in to engage the bottom of recess Z2 to prevent said shell from slipping off of said body, the sides of said lip engaging the side walls 6 and Z) of the recess b to prevent rotation of the screw shell with relation to body B. The recess 6 opens at the top of member 13 for convenient insertion if desired of a tool to bend over lip (Z.

The shell is provided .with two curved flanges (Z and (Z bent inward in recess (i for resilient engagement with pin a which in this form not only directly engages the screw shell but does so at the outside of the shell and is exposed for direct contact with the contact of a socket or other receiving member.

Center contact E is held in place by screw F which also holds in place contact member G which is in recess 6 and has a portion bent down into recess 6 the bent portion having two integral resilient curved arms 9 and g which directly engage pin a.

Center contact E has a fiat portion 6 for contact and an integral internally threaded and inwardly extending portion 6 to engage screw F, the purpose of the extended threading being that the center contact may be used with screws of different lengths.

In the form of Fig. 7 the insulating body B is threaded on its exterior for direct mechanical engagement with a socket orother receiving member (not shown). In this form the pin a is-exposed for direct electrical engagement with a contact of the reexternal threaded member havinga spring portion; and a pin to engage said spring portion.

2. In combination with a separable pin plug member an insulating body portion car:

rying a threaded embossed metal contact member on its periphery for contact with a current carrying terminal of an electric light or other current supply fixture, said contact member also serving as a contact terminal for one of the pins of the pin plug.

3. In combination with a separable pin plug member an insulating body portion carrying a'threaded embossed metal contact member on its periphery for contacting with .a current carrying terminal of an' electric light or other current supply fixture, said contact member also serving as a contact terminal for one of the pins of the pin plug which is located so as to wedge itself between the peripheral metal contacting member of the insulating body portion, and the current carrying terminal of a fixture.

RALPH A. SCHOENBERG. 

